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Established in 2001, Puyang Zhong Yuan Restar Petroleum Equipment Co.,Ltd, “RSD” for short, is Henan’s high-tech enterprise with intellectual property advantages and independent legal person qualification. With registered capital of RMB 50 million, the Company has two subsidiaries-Henan Restar Separation Equipment Technology Co., Ltd We are mainly specialized in R&D, production and service of various intelligent separation and control systems in oil&gas drilling,engineering environmental protection and mining industries.We always take the lead in Chinese market shares of drilling fluid shale shaker for many years. Our products have been exported more than 20 countries and always extensively praised by customers. We are Class I network supplier of Sinopec,CNPC and CNOOC and registered supplier of ONGC, OIL India,KOC. High quality and international standard products make us gain many Large-scale drilling fluids recycling systems for Saudi Aramco and Gazprom projects.

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Recycling of Waste Sludge: Preparation and Application of ...
Recycling of Waste Sludge: Preparation and Application of ...

With the rapidly increasing industrial and agricultural development, a large amount of ,sludge, has been produced from much water treatment. ,Sludge, treatment has become one of the most important environmental issues. Resource utilization of ,sludge, is one of the important efficient methods for solving this issue. ,Sludge,-based activated carbon (SBAC) materials have high adsorption performance and ...

(PDF) Negative pH and Extremely Acidic Mine Waters from ...
(PDF) Negative pH and Extremely Acidic Mine Waters from ...

Extremely ,acidic, mine waters with ,pH, values as low as −3.6, total dissolved metal concentrations as high as 200 g/L, and sulfate concentrations as high as 760 g/L, have been encountered ...

What is the pH of sewage water? - Quora
What is the pH of sewage water? - Quora

Materials with a pH higher than this are considered alkaline, or basic. Materials with a, pH lower than 7, are considered acidic. Based on the source of the waste materials or sewage, the waste stream may be either alkaline or basic. It is the goal of sewage and wastewater treatment to treat the stream and return

What could be put on metal to protect it from acid rain ...
What could be put on metal to protect it from acid rain ...

If you are Talking about Steel you have several Options. Galvanising is Best for Long Term Protection but other Methods include; Enamelling (This is Excellent but rather Expensive), Powder Coating (Another Excellent Protection as good as Enamel an...

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Road West, North Branch, Jingkai Road, Puyang City